[MERGE] Review feedback : test for PointlessCommit and that the example given in the help (excluding a subtree of a specified tree) does in fact work.

[John Arbash Meinel]

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Robert Collins wrote:
| Thanks for the feedback James,
| addressed herewith.
|
| -Rob
|

- -        specific_files = self.specific_files
+        exclude = self.exclude
+        specific_files = self.specific_files or []


^- I believe "iter_entries_by_dir()" considered special_files = [] to
mean include *no* files, rather than all files. But I guess you are only
using that as a local variable to pass to is_inside_any.

Otherwise it seems fine.

BB:approve

John
=:->
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